Hey, at least he was the only one struck down. David caused the death of 70,000 people for his infidelity.
He always was an overachiever.
Actually it was not David’s infidelity but his call for a census.
http://www.biblegateway.com/passage/?search=2+Samuel+24&version=NKJV
Unless you are viewing calling a census ‘infidelity.’